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flightgear/src/Main/renderer.cxx
frohlich b51292d9db Modified Files: 
src/FDM/groundcache.cxx src/Main/fg_commands.cxx
	src/Main/main.cxx src/Main/renderer.cxx
	src/Scenery/FGTileLoader.cxx src/Scenery/scenery.cxx
	src/Scenery/scenery.hxx src/Scenery/tileentry.cxx
	src/Scenery/tileentry.hxx src/Scenery/tilemgr.cxx
	src/Scenery/tilemgr.hxx: Simplify scenegraph structure.
2007-05-08 06:12:26 +00:00

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// renderer.cxx -- top level sim routines
//
// Written by Curtis Olson, started May 1997.
// This file contains parts of main.cxx prior to october 2004
//
// Copyright (C) 1997 - 2002 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <simgear/compiler.h>
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#include <osg/ref_ptr>
#include <osg/AlphaFunc>
#include <osg/BlendFunc>
#include <osg/Camera>
#include <osg/CameraView>
#include <osg/CullFace>
#include <osg/Depth>
#include <osg/Fog>
#include <osg/Group>
#include <osg/Light>
#include <osg/LightModel>
#include <osg/LightSource>
#include <osg/NodeCallback>
#include <osg/Notify>
#include <osg/PolygonMode>
#include <osg/PolygonOffset>
#include <osg/ShadeModel>
#include <osg/TexEnv>
#include <osgUtil/SceneView>
#include <osgUtil/UpdateVisitor>
#include <osgUtil/IntersectVisitor>
#include <osg/io_utils>
#include <osgDB/WriteFile>
#include <osgDB/ReadFile>
#include <sstream>
#include <simgear/math/SGMath.hxx>
#include <simgear/screen/extensions.hxx>
#include <simgear/scene/material/matlib.hxx>
#include <simgear/scene/model/animation.hxx>
#include <simgear/scene/model/model.hxx>
#include <simgear/scene/model/modellib.hxx>
#include <simgear/scene/model/placement.hxx>
#include <simgear/scene/util/SGUpdateVisitor.hxx>
#include <simgear/scene/tgdb/pt_lights.hxx>
#include <simgear/props/props.hxx>
#include <simgear/timing/sg_time.hxx>
#include <simgear/ephemeris/ephemeris.hxx>
#include <simgear/math/sg_random.h>
#ifdef FG_JPEG_SERVER
#include <simgear/screen/jpgfactory.hxx>
#endif
#include <simgear/environment/visual_enviro.hxx>
#include <Scenery/tileentry.hxx>
#include <Time/light.hxx>
#include <Time/light.hxx>
#include <Aircraft/aircraft.hxx>
#include <Cockpit/panel.hxx>
#include <Cockpit/cockpit.hxx>
#include <Cockpit/hud.hxx>
#include <Model/panelnode.hxx>
#include <Model/modelmgr.hxx>
#include <Model/acmodel.hxx>
#include <Scenery/scenery.hxx>
#include <Scenery/redout.hxx>
#include <Scenery/tilemgr.hxx>
#include <ATC/ATCdisplay.hxx>
#include <GUI/new_gui.hxx>
#include <Instrumentation/instrument_mgr.hxx>
#include <Instrumentation/HUD/HUD.hxx>
#include "splash.hxx"
#include "renderer.hxx"
#include "main.hxx"
class SGPuDrawable : public osg::Drawable {
public:
SGPuDrawable()
{
// Dynamic stuff, do not store geometry
setUseDisplayList(false);
osg::StateSet* stateSet = getOrCreateStateSet();
stateSet->setRenderBinDetails(1001, "RenderBin");
// speed optimization?
stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
// We can do translucent menus, so why not. :-)
stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
}
virtual void drawImplementation(osg::RenderInfo& renderInfo) const
{ drawImplementation(*renderInfo.getState()); }
void drawImplementation(osg::State& state) const
{
state.pushStateSet(getStateSet());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
state.disableAllVertexArrays();
glPushAttrib(GL_ALL_ATTRIB_BITS);
glPushClientAttrib(~0u);
if((fgGetBool("/sim/atc/enabled"))
|| (fgGetBool("/sim/ai-traffic/enabled")))
globals->get_ATC_display()->update(delta_time_sec, state);
puDisplay();
glPopClientAttrib();
glPopAttrib();
state.popStateSet();
state.dirtyAllModes();
state.dirtyAllAttributes();
state.dirtyAllVertexArrays();
}
virtual osg::Object* cloneType() const { return new SGPuDrawable; }
virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
private:
};
class SGHUDAndPanelDrawable : public osg::Drawable {
public:
SGHUDAndPanelDrawable()
{
// Dynamic stuff, do not store geometry
setUseDisplayList(false);
osg::StateSet* stateSet = getOrCreateStateSet();
stateSet->setRenderBinDetails(1000, "RenderBin");
// speed optimization?
stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
}
virtual void drawImplementation(osg::RenderInfo& renderInfo) const
{ drawImplementation(*renderInfo.getState()); }
void drawImplementation(osg::State& state) const
{
state.pushStateSet(getStateSet());
state.apply();
state.setActiveTextureUnit(0);
state.setClientActiveTextureUnit(0);
state.disableAllVertexArrays();
glPushAttrib(GL_ALL_ATTRIB_BITS);
glPushClientAttrib(~0u);
fgCockpitUpdate(&state);
FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
hud->draw(state);
// update the panel subsystem
if ( globals->get_current_panel() != NULL )
globals->get_current_panel()->update(state);
// We don't need a state here - can be safely removed when we can pick
// correctly
fgUpdate3DPanels();
glPopClientAttrib();
glPopAttrib();
state.popStateSet();
state.dirtyAllModes();
state.dirtyAllAttributes();
state.dirtyAllVertexArrays();
}
virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
private:
};
class FGLightSourceUpdateCallback : public osg::NodeCallback {
public:
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
assert(dynamic_cast<osg::LightSource*>(node));
osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
osg::Light* light = lightSource->getLight();
FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
light->setAmbient(l->scene_ambient().osg());
light->setDiffuse(l->scene_diffuse().osg());
light->setSpecular(l->scene_specular().osg());
SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
light->setPosition(position.osg());
SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
light->setDirection(direction.osg());
light->setSpotExponent(0);
light->setSpotCutoff(180);
light->setConstantAttenuation(1);
light->setLinearAttenuation(0);
light->setQuadraticAttenuation(0);
traverse(node, nv);
}
};
class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
public:
FGWireFrameModeUpdateCallback() :
mWireframe(fgGetNode("/sim/rendering/wireframe"))
{ }
virtual void operator()(osg::StateAttribute* stateAttribute,
osg::NodeVisitor*)
{
assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
osg::PolygonMode* polygonMode;
polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
if (mWireframe->getBoolValue())
polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
osg::PolygonMode::LINE);
else
polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
osg::PolygonMode::FILL);
}
private:
SGSharedPtr<SGPropertyNode> mWireframe;
};
class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
public:
FGLightModelUpdateCallback() :
mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
{ }
virtual void operator()(osg::StateAttribute* stateAttribute,
osg::NodeVisitor*)
{
assert(dynamic_cast<osg::LightModel*>(stateAttribute));
osg::LightModel* lightModel;
lightModel = static_cast<osg::LightModel*>(stateAttribute);
#if 0
FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
lightModel->setAmbientIntensity(l->scene_ambient().osg());
#else
lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
#endif
lightModel->setTwoSided(true);
lightModel->setLocalViewer(false);
if (mHighlights->getBoolValue()) {
lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
} else {
lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
}
}
private:
SGSharedPtr<SGPropertyNode> mHighlights;
};
class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
public:
FGFogEnableUpdateCallback() :
mFogEnabled(fgGetNode("/sim/rendering/fog"))
{ }
virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
{
if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
} else {
stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
}
}
private:
SGSharedPtr<SGPropertyNode> mFogEnabled;
};
class FGFogUpdateCallback : public osg::StateAttribute::Callback {
public:
virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
{
assert(dynamic_cast<SGUpdateVisitor*>(nv));
assert(dynamic_cast<osg::Fog*>(sa));
SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
osg::Fog* fog = static_cast<osg::Fog*>(sa);
fog->setMode(osg::Fog::EXP2);
fog->setColor(updateVisitor->getFogColor().osg());
fog->setDensity(updateVisitor->getFogExp2Density());
}
};
// update callback for the switch node guarding that splash
class FGScenerySwitchCallback : public osg::NodeCallback {
public:
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
assert(dynamic_cast<osg::Switch*>(node));
osg::Switch* sw = static_cast<osg::Switch*>(node);
double t = globals->get_sim_time_sec();
bool enabled = 0 < t;
sw->setValue(0, enabled);
if (!enabled)
return;
traverse(node, nv);
}
};
// Sky structures
SGSky *thesky;
osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView; // This SceneView is used by class FGJpegHttpd ( jpg-httpd.cxx )
static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
static osg::ref_ptr<osg::CameraView> mCameraView = new osg::CameraView;
static osg::ref_ptr<osg::Camera> mBackGroundCamera = new osg::Camera;
FGRenderer::FGRenderer()
{
#ifdef FG_JPEG_SERVER
jpgRenderFrame = FGRenderer::update;
#endif
}
FGRenderer::~FGRenderer()
{
#ifdef FG_JPEG_SERVER
jpgRenderFrame = NULL;
#endif
}
// Initialize various GL/view parameters
void
FGRenderer::splashinit( void ) {
// Add the splash screen node
mRealRoot->addChild(fgCreateSplashNode());
sceneView->setSceneData(mRealRoot.get());
sceneView->setDefaults(osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
sceneView->setFrameStamp(mFrameStamp.get());
sceneView->setUpdateVisitor(mUpdateVisitor.get());
}
void
FGRenderer::init( void ) {
osg::initNotifyLevel();
// The number of polygon-offset "units" to place between layers. In
// principle, one is supposed to be enough. In practice, I find that
// my hardware/driver requires many more.
osg::PolygonOffset::setUnitsMultiplier(1);
osg::PolygonOffset::setFactorMultiplier(1);
// Go full screen if requested ...
if ( fgGetBool("/sim/startup/fullscreen") )
fgOSFullScreen();
if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) ||
(!fgGetBool("/sim/rendering/shading"))) {
// if fastest fog requested, or if flat shading force fastest
glHint ( GL_FOG_HINT, GL_FASTEST );
} else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
glHint ( GL_FOG_HINT, GL_DONT_CARE );
}
glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
sceneView->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
sceneView->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
stateSet->setAttribute(new osg::BlendFunc);
stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
// this will be set below
stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
osg::Material* material = new osg::Material;
stateSet->setAttribute(material);
stateSet->setTextureAttribute(0, new osg::TexEnv);
stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
// stateSet->setAttribute(new osg::CullFace(osg::CullFace::BACK));
// stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
// this is the topmost scenegraph node for osg
mBackGroundCamera->addChild(thesky->getPreRoot());
mBackGroundCamera->setClearMask(0);
GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
inheritanceMask &= ~osg::CullSettings::NEAR_FAR_RATIO;
inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
mBackGroundCamera->setInheritanceMask(inheritanceMask);
mBackGroundCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
mBackGroundCamera->setCullingMode(osg::CullSettings::NO_CULLING);
mBackGroundCamera->setRenderOrder(osg::Camera::NESTED_RENDER);
stateSet = mBackGroundCamera->getOrCreateStateSet();
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
osg::Group* sceneGroup = new osg::Group;
sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
sceneGroup->addChild(thesky->getCloudRoot());
stateSet = sceneGroup->getOrCreateStateSet();
stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
// need to update the light on every frame
osg::LightSource* lightSource = new osg::LightSource;
lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
// relative because of CameraView being just a clever transform node
lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
mRoot->addChild(lightSource);
lightSource->addChild(mBackGroundCamera.get());
lightSource->addChild(sceneGroup);
stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
// enable disable specular highlights.
// is the place where we might plug in an other fragment shader ...
osg::LightModel* lightModel = new osg::LightModel;
lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
stateSet->setAttribute(lightModel);
// switch to enable wireframe
osg::PolygonMode* polygonMode = new osg::PolygonMode;
polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
stateSet->setAttributeAndModes(polygonMode);
// scene fog handling
osg::Fog* fog = new osg::Fog;
fog->setUpdateCallback(new FGFogUpdateCallback);
stateSet->setAttributeAndModes(fog);
stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
// plug in the GUI
osg::Camera* guiCamera = new osg::Camera;
guiCamera->setRenderOrder(osg::Camera::POST_RENDER, 100);
guiCamera->setClearMask(0);
inheritanceMask = osg::CullSettings::ALL_VARIABLES;
inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
guiCamera->setInheritanceMask(inheritanceMask);
guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
osg::Geode* geode = new osg::Geode;
geode->addDrawable(new SGPuDrawable);
geode->addDrawable(new SGHUDAndPanelDrawable);
guiCamera->addChild(geode);
mCameraView->addChild(mRoot.get());
osg::Switch* sw = new osg::Switch;
sw->setUpdateCallback(new FGScenerySwitchCallback);
sw->addChild(mCameraView.get());
mRealRoot->addChild(sw);
mRealRoot->addChild(FGCreateRedoutNode());
mRealRoot->addChild(guiCamera);
}
// Update all Visuals (redraws anything graphics related)
void
FGRenderer::update( bool refresh_camera_settings ) {
bool scenery_loaded = fgGetBool("sim/sceneryloaded")
|| fgGetBool("sim/sceneryloaded-override");
if ( idle_state < 1000 || !scenery_loaded ) {
fgSetDouble("/sim/startup/splash-alpha", 1.0);
// Keep resetting sim time while the sim is initializing
globals->set_sim_time_sec( 0.0 );
// the splash screen is now in the scenegraph
sceneView->update();
sceneView->cull();
sceneView->draw();
return;
}
// Fade out the splash screen over the first three seconds.
double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
fgSetDouble("/sim/startup/splash-alpha", sAlpha);
bool skyblend = fgGetBool("/sim/rendering/skyblend");
bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
bool distance_attenuation
= fgGetBool("/sim/rendering/distance-attenuation");
// OSGFIXME
SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
distance_attenuation );
static const SGPropertyNode *groundlevel_nearplane
= fgGetNode("/sim/current-view/ground-level-nearplane-m");
FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
// update fog params
double actual_visibility;
if (fgGetBool("/environment/clouds/status")) {
actual_visibility = thesky->get_visibility();
} else {
actual_visibility = fgGetDouble("/environment/visibility-m");
}
// idle_state is now 1000 meaning we've finished all our
// initializations and are running the main loop, so this will
// now work without seg faulting the system.
FGViewer *current__view = globals->get_current_view();
// Force update of center dependent values ...
current__view->set_dirty();
if ( refresh_camera_settings ) {
// update view port
resize( fgGetInt("/sim/startup/xsize"),
fgGetInt("/sim/startup/ysize") );
SGVec3d position = current__view->getViewPosition();
SGQuatd attitude = current__view->getViewOrientation();
SGVec3d osgPosition = attitude.transform(-position);
mCameraView->setPosition(osgPosition.osg());
mCameraView->setAttitude(inverse(attitude).osg());
}
if ( skyblend ) {
if ( fgGetBool("/sim/rendering/textures") ) {
SGVec4f clearColor(l->adj_fog_color());
sceneView->getCamera()->setClearColor(clearColor.osg());
}
} else {
SGVec4f clearColor(l->sky_color());
sceneView->getCamera()->setClearColor(clearColor.osg());
}
// update fog params if visibility has changed
double visibility_meters = fgGetDouble("/environment/visibility-m");
thesky->set_visibility(visibility_meters);
thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
( global_multi_loop * fgGetInt("/sim/speed-up") )
/ (double)fgGetInt("/sim/model-hz") );
// update the sky dome
if ( skyblend ) {
// The sun and moon distances are scaled down versions
// of the actual distance to get both the moon and the sun
// within the range of the far clip plane.
// Moon distance: 384,467 kilometers
// Sun distance: 150,000,000 kilometers
double sun_horiz_eff, moon_horiz_eff;
if (fgGetBool("/sim/rendering/horizon-effect")) {
sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
} else {
sun_horiz_eff = moon_horiz_eff = 1.0;
}
static SGSkyState sstate;
sstate.view_pos = toVec3f(current__view->get_view_pos());
sstate.zero_elev = toVec3f(current__view->get_zero_elev());
sstate.view_up = current__view->get_world_up();
sstate.lon = current__view->getLongitude_deg()
* SGD_DEGREES_TO_RADIANS;
sstate.lat = current__view->getLatitude_deg()
* SGD_DEGREES_TO_RADIANS;
sstate.alt = current__view->getAltitudeASL_ft()
* SG_FEET_TO_METER;
sstate.spin = l->get_sun_rotation();
sstate.gst = globals->get_time_params()->getGst();
sstate.sun_ra = globals->get_ephem()->getSunRightAscension();
sstate.sun_dec = globals->get_ephem()->getSunDeclination();
sstate.sun_dist = 50000.0 * sun_horiz_eff;
sstate.moon_ra = globals->get_ephem()->getMoonRightAscension();
sstate.moon_dec = globals->get_ephem()->getMoonDeclination();
sstate.moon_dist = 40000.0 * moon_horiz_eff;
sstate.sun_angle = l->get_sun_angle();
/*
SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
<< l->sky_color()[0] << " "
<< l->sky_color()[1] << " "
<< l->sky_color()[2] << " "
<< l->sky_color()[3] );
SG_LOG( SG_GENERAL, SG_BULK, " fog = "
<< l->fog_color()[0] << " "
<< l->fog_color()[1] << " "
<< l->fog_color()[2] << " "
<< l->fog_color()[3] );
SG_LOG( SG_GENERAL, SG_BULK,
" sun_angle = " << l->sun_angle
<< " moon_angle = " << l->moon_angle );
*/
static SGSkyColor scolor;
scolor.sky_color = SGVec3f(l->sky_color().data());
scolor.fog_color = SGVec3f(l->adj_fog_color().data());
scolor.cloud_color = SGVec3f(l->cloud_color().data());
scolor.sun_angle = l->get_sun_angle();
scolor.moon_angle = l->get_moon_angle();
scolor.nplanets = globals->get_ephem()->getNumPlanets();
scolor.nstars = globals->get_ephem()->getNumStars();
scolor.planet_data = globals->get_ephem()->getPlanets();
scolor.star_data = globals->get_ephem()->getStars();
thesky->reposition( sstate, delta_time_sec );
thesky->repaint( scolor );
/*
SG_LOG( SG_GENERAL, SG_BULK,
"thesky->reposition( view_pos = " << view_pos[0] << " "
<< view_pos[1] << " " << view_pos[2] );
SG_LOG( SG_GENERAL, SG_BULK,
" zero_elev = " << zero_elev[0] << " "
<< zero_elev[1] << " " << zero_elev[2]
<< " lon = " << cur_fdm_state->get_Longitude()
<< " lat = " << cur_fdm_state->get_Latitude() );
SG_LOG( SG_GENERAL, SG_BULK,
" sun_rot = " << l->get_sun_rotation
<< " gst = " << SGTime::cur_time_params->getGst() );
SG_LOG( SG_GENERAL, SG_BULK,
" sun ra = " << globals->get_ephem()->getSunRightAscension()
<< " sun dec = " << globals->get_ephem()->getSunDeclination()
<< " moon ra = " << globals->get_ephem()->getMoonRightAscension()
<< " moon dec = " << globals->get_ephem()->getMoonDeclination() );
*/
//OSGFIXME
// shadows->setupShadows(
// current__view->getLongitude_deg(),
// current__view->getLatitude_deg(),
// globals->get_time_params()->getGst(),
// globals->get_ephem()->getSunRightAscension(),
// globals->get_ephem()->getSunDeclination(),
// l->get_sun_angle());
}
// sgEnviro.setLight(l->adj_fog_color());
// texture parameters
glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
- current__view->getSGLocation()->get_cur_elev_m();
float scene_nearplane, scene_farplane;
if ( agl > 10.0 ) {
scene_nearplane = 10.0f;
scene_farplane = 120000.0f;
} else {
scene_nearplane = groundlevel_nearplane->getDoubleValue();
scene_farplane = 120000.0f;
}
setNearFar( scene_nearplane, scene_farplane );
// sgEnviro.startOfFrame(current__view->get_view_pos(),
// current__view->get_world_up(),
// current__view->getLongitude_deg(),
// current__view->getLatitude_deg(),
// current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
// delta_time_sec);
// OSGFIXME
// sgEnviro.drawLightning();
// double current_view_origin_airspeed_horiz_kt =
// fgGetDouble("/velocities/airspeed-kt", 0.0)
// * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
// * SGD_DEGREES_TO_RADIANS);
// TODO:find the real view speed, not the AC one
// sgEnviro.drawPrecipitation(
// fgGetDouble("/environment/metar/rain-norm", 0.0),
// fgGetDouble("/environment/metar/snow-norm", 0.0),
// fgGetDouble("/environment/metar/hail-norm", 0.0),
// current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
// current__view->getRoll_deg() + current__view->getRollOffset_deg(),
// - current__view->getHeadingOffset_deg(),
// current_view_origin_airspeed_horiz_kt
// );
// OSGFIXME
// if( is_internal )
// shadows->endOfFrame();
// need to call the update visitor once
globals->get_aircraft_model()->select( true );
FGTileMgr::set_tile_filter( true );
mFrameStamp->setReferenceTime(globals->get_sim_time_sec());
mFrameStamp->setFrameNumber(1+mFrameStamp->getFrameNumber());
mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
mUpdateVisitor->setViewData(current__view->getViewPosition(),
current__view->getViewOrientation());
SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
mUpdateVisitor->setLight(direction, l->scene_ambient(),
l->scene_diffuse(), l->scene_specular(),
l->adj_fog_color(),
l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
mUpdateVisitor->setVisibility(actual_visibility);
if (fgGetBool("/sim/panel-hotspots"))
sceneView->setCullMask(sceneView->getCullMask()|SG_NODEMASK_PICK_BIT);
else
sceneView->setCullMask(sceneView->getCullMask()&(~SG_NODEMASK_PICK_BIT));
sceneView->update();
sceneView->cull();
sceneView->draw();
}
// options.cxx needs to see this for toggle_panel()
// Handle new window size or exposure
void
FGRenderer::resize( int width, int height ) {
int view_h;
if ( (!fgGetBool("/sim/virtual-cockpit"))
&& fgPanelVisible() && idle_state == 1000 ) {
view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
globals->get_current_panel()->getYOffset()) / 768.0);
} else {
view_h = height;
}
sceneView->getViewport()->setViewport(0, height - view_h, width, view_h);
static int lastwidth = 0;
static int lastheight = 0;
if (width != lastwidth)
fgSetInt("/sim/startup/xsize", lastwidth = width);
if (height != lastheight)
fgSetInt("/sim/startup/ysize", lastheight = height);
guiInitMouse(width, height);
// for all views
FGViewMgr *viewmgr = globals->get_viewmgr();
if (viewmgr) {
for ( int i = 0; i < viewmgr->size(); ++i ) {
viewmgr->get_view(i)->
set_aspect_ratio((float)view_h / (float)width);
}
setFOV( viewmgr->get_current_view()->get_h_fov(),
viewmgr->get_current_view()->get_v_fov() );
}
}
// These are wrapper functions around ssgSetNearFar() and ssgSetFOV()
// which will post process and rewrite the resulting frustum if we
// want to do asymmetric view frustums.
static void fgHackFrustum() {
// specify a percent of the configured view frustum to actually
// display. This is a bit of a hack to achieve asymmetric view
// frustums. For instance, if you want to display two monitors
// side by side, you could specify each with a double fov, a 0.5
// aspect ratio multiplier, and then the left side monitor would
// have a left_pct = 0.0, a right_pct = 0.5, a bottom_pct = 0.0,
// and a top_pct = 1.0. The right side monitor would have a
// left_pct = 0.5 and a right_pct = 1.0.
static SGPropertyNode *left_pct
= fgGetNode("/sim/current-view/frustum-left-pct");
static SGPropertyNode *right_pct
= fgGetNode("/sim/current-view/frustum-right-pct");
static SGPropertyNode *bottom_pct
= fgGetNode("/sim/current-view/frustum-bottom-pct");
static SGPropertyNode *top_pct
= fgGetNode("/sim/current-view/frustum-top-pct");
double left, right;
double bottom, top;
double zNear, zFar;
sceneView->getProjectionMatrixAsFrustum(left, right, bottom, top, zNear, zFar);
// cout << " l = " << f->getLeft()
// << " r = " << f->getRight()
// << " b = " << f->getBot()
// << " t = " << f->getTop()
// << " n = " << f->getNear()
// << " f = " << f->getFar()
// << endl;
double width = right - left;
double height = top - bottom;
double l, r, t, b;
if ( left_pct != NULL ) {
l = left + width * left_pct->getDoubleValue();
} else {
l = left;
}
if ( right_pct != NULL ) {
r = left + width * right_pct->getDoubleValue();
} else {
r = right;
}
if ( bottom_pct != NULL ) {
b = bottom + height * bottom_pct->getDoubleValue();
} else {
b = bottom;
}
if ( top_pct != NULL ) {
t = bottom + height * top_pct->getDoubleValue();
} else {
t = top;
}
sceneView->setProjectionMatrixAsFrustum(l, r, b, t, zNear, zFar);
}
// we need some static storage space for these values. However, we
// can't store it in a renderer class object because the functions
// that manipulate these are static. They are static so they can
// interface to the display callback system. There's probably a
// better way, there has to be a better way, but I'm not seeing it
// right now.
static float fov_width = 55.0;
static float fov_height = 42.0;
static float fov_near = 1.0;
static float fov_far = 1000.0;
/** FlightGear code should use this routine to set the FOV rather than
* calling the ssg routine directly
*/
void FGRenderer::setFOV( float w, float h ) {
fov_width = w;
fov_height = h;
sceneView->setProjectionMatrixAsPerspective(fov_height,
fov_width/fov_height,
fov_near, fov_far);
// fully specify the view frustum before hacking it (so we don't
// accumulate hacked effects
fgHackFrustum();
// sgEnviro.setFOV( w, h );
}
/** FlightGear code should use this routine to set the Near/Far clip
* planes rather than calling the ssg routine directly
*/
void FGRenderer::setNearFar( float n, float f ) {
// OSGFIXME: we have currently too much z-buffer fights
n = 0.1;
fov_near = n;
fov_far = f;
sceneView->setProjectionMatrixAsPerspective(fov_height,
fov_width/fov_height,
fov_near, fov_far);
// fully specify the view frustum before hacking it (so we don't
// accumulate hacked effects
fgHackFrustum();
}
bool
FGRenderer::pick( unsigned x, unsigned y,
std::vector<SGSceneryPick>& pickList )
{
// wipe out the return ...
pickList.resize(0);
// we can get called early ...
if (!sceneView.valid())
return false;
osg::Node* sceneData = globals->get_scenery()->get_scene_graph();
if (!sceneData)
return false;
osg::Viewport* viewport = sceneView->getViewport();
if (!viewport)
return false;
// don't know why, but the update has partly happened somehow,
// so update the scenery part of the viewer
FGViewer *current_view = globals->get_current_view();
// Force update of center dependent values ...
current_view->set_dirty();
SGVec3d position = current_view->getViewPosition();
SGQuatd attitude = current_view->getViewOrientation();
SGVec3d osgPosition = attitude.transform(-position);
mCameraView->setPosition(osgPosition.osg());
mCameraView->setAttitude(inverse(attitude).osg());
osg::Matrix projection(sceneView->getProjectionMatrix());
osg::Matrix modelview(sceneView->getViewMatrix());
osg::NodePathList nodePath = sceneData->getParentalNodePaths();
// modify the view matrix so that it accounts for this nodePath's
// accumulated transform
if (!nodePath.empty())
modelview.preMult(computeLocalToWorld(nodePath.front()));
// swap the y values ...
y = viewport->height() - y;
// set up the pick visitor
osgUtil::PickVisitor pickVisitor(viewport, projection, modelview, x, y);
sceneData->accept(pickVisitor);
if (!pickVisitor.hits())
return false;
// collect all interaction callbacks on the pick ray.
// They get stored in the pickCallbacks list where they are sorted back
// to front and croasest to finest wrt the scenery node they are attached to
osgUtil::PickVisitor::LineSegmentHitListMap::const_iterator mi;
for (mi = pickVisitor.getSegHitList().begin();
mi != pickVisitor.getSegHitList().end();
++mi) {
osgUtil::IntersectVisitor::HitList::const_iterator hi;
for (hi = mi->second.begin(); hi != mi->second.end(); ++hi) {
// ok, go back the nodes and ask for intersection callbacks,
// execute them in top down order
const osg::NodePath& np = hi->getNodePath();
osg::NodePath::const_reverse_iterator npi;
for (npi = np.rbegin(); npi != np.rend(); ++npi) {
SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
if (!ud)
continue;
for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
SGPickCallback* pickCallback = ud->getPickCallback(i);
if (!pickCallback)
continue;
SGSceneryPick sceneryPick;
/// note that this is done totally in doubles instead of
/// just using getWorldIntersectionPoint
osg::Vec3d localPt = hi->getLocalIntersectPoint();
sceneryPick.info.local = SGVec3d(localPt);
if (hi->getMatrix())
sceneryPick.info.wgs84 = SGVec3d(localPt*(*hi->getMatrix()));
else
sceneryPick.info.wgs84 = SGVec3d(localPt);
sceneryPick.callback = pickCallback;
pickList.push_back(sceneryPick);
}
}
}
}
return !pickList.empty();
}
// end of renderer.cxx
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